1 3 Computing System Fundamentals 3.2 Computer Architecture.

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Presentation transcript:

1 3 Computing System Fundamentals 3.2 Computer Architecture

3.2.7 Microprocessors

3 Definition Similar to a CPU, with CU, ALU, registers etc., but lacking (much) primary memory. Their programs are inflexible and stored in non-volatile memory (usually ROM). Programmed in the factory. Designed to perform one or a very limited number of functions.

4 In cars they control: ‣ fuel injection, ‣ the Automatic Braking System (ABS), ‣ airbags, ‣ SatNav, etc.

5 In washing machines......they control: ‣ water level, ‣ temperature, ‣ cycle time, ‣ spin speed, etc.

6 In a camera......they control: ‣ exposure, ‣ autofocus, ‣ image compression (e.g. JPEG), etc.

7 In a CD player......they control: ‣ track selection, ‣ track data calculation, ‣ conversion of optical data to sound, etc.

8 In a house.....they control: ‣ TV remote, ‣ central heating and AC, ‣ digital clocks, ‣ microwave ovens, ‣ mobile phones, ‣ burglar alarms, etc.

9 In a house.....they control: ‣ calculators, ‣ digital watches, ‣ heating and AC, ‣ security system, ‣ interactive whiteboards, etc.